ASTM E407 – 07 PDF

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Originally approved in Last previous edition approved in as E–99 DOI: /E 2 For referenced ASTM standards. ASTM E()e1. Standard Practice for Microetching Metals and Alloys. standard by ASTM International, 06/01/ View all product details. Determination of Residual Stresses Numerically Obtained in ASTM AH36 Steel Welded by TIG Process. Pablo Batista Guimarães, Paulo.

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ASTM E – 07()e1 Standard Practice for Microetching Metals and Alloys

Use stainless steel cathode and platinum or Nichrome wire r407 to specimen. Immerse or swab few seconds to few minutes. Sometimes a few passes on the?

Additional information can be obtained at the EPA website3. Continued Uses general structure grain boundaries e40 structure etch-polishing for viewing grains with polarized light Etchants66,,a a Osmium Base: Individual reprints single or multiple astmm of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Adding a wetting agent such as zepherin chloride will increase response. For etch-polishing, use shorter time.

Use this solution for alternate etch and polishing. Rinse in cold water.

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ASTM E407-07 Standard Practice for Microetching Metals and Alloys

Properly discard when dark yellow. A number in parentheses indicates the year of last reapproval. Higher percentage of HCl minimizes pitting. Dissolve CrO3 in hot water and cool before adding acetic acid. Solution A is used as a chemical aztm, though some etching will occur.

Pure Th Th alloys Tin Base: Works best with attack-polished specimens. Buying HF at the lowest useable concentration will signi?

Additionally, one can contact the glove manufacturer or, if available, consult the manufacturers glove chart. If zstm has considerable surface?

Mix equal volumes of Solutions A and B just before use. Solution should be freshly prepared. Immerse 30 s—3 min. Etch time varies with material. Precaution—Properly discard before solution attains a dark orange color. Swab for 1—3 min. KMnO4 is an agressive staining agent. For each metal and alloy, one or more etchant numbers and their corresponding use is indicated.

Etching rate is increased, sensitivity decreased with increased percentage of HNO3. Use carbon cathode and platinum wire connection to specimen. Use just prior to the last polishing operation. After etching, water rinse, alcohol rinse, and dry. Ast in running water. Information describing the appropriate glove may be obtained by consulting the MSDS for the chemical being used.

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Immerse 1—2 s at a time and immediately rinse with methanol. Swab 2 or more minutes for desired surface. Use at 2—20 V dc, 5—20 s, stainless steel cathode. At this time the specimen should be ready for examination via polarized light.

Electrolytic at 6 V for 5—10 s. Distilled water may be added to maintain hydration, It must only be stored in plastic or glass bottles with nonmetallic lids.

Rinse with methanol and blow dry. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

[PDF] ASTM E Standard Practice for Microetching Metals and Alloys – Free Download PDF

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Start at 3 V dc. For highly corrosion-resistant alloys, use 20—30 mL HCl. Clean with cotton in running water. Swab gently 10—15 s.